Development and Testing of a Portable Active Imager for Natural Gas Detection
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- BAMBHA Ray P.
- Sandia National Laboratories, Livermore
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- REICHARDT Thomas A.
- Sandia National Laboratories, Livermore
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- SCHMITT Randal
- Sandia National Laboratories, Albuquerque
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- SOMMERS Ricky
- Sandia National Laboratories, Livermore
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- BIRTOLA Sal
- Sandia National Laboratories, Livermore
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- HUBBARD Gary
- Sandia National Laboratories, Livermore
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- KULP Thomas J.
- Sandia National Laboratories, Livermore
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- TAMURA Masayuki
- The Japan Gas Association
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- KOTHARI Kiran
- Gas Technology Institute
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A portable sensor has been developed that is capable of producing real-time video images of fugitive methane emissions. Active imaging is performed using a pulsed optical parametric generator, OPG, that illuminates the scene at wavelengths corresponding to an absorption feature of methane near 3.27 um. The imager is capable of displaying single-wavelength images as well as differential-wavelength images. The transmitted radiation has a fan-shaped beam profile, and the radiation backscattered from surfaces is imaged onto a single row of detectors on a focal plane array. By sweeping the field-of-view, a two-dimensional image is formed in which a methane plume appears as an area of attenuation. Two pulses offset in wavelength can be transmitted to produce a differential image that suppresses background features and enhances gas plume visibility. The ima-ger can be operated with a battery power source and carried by a single operator. Tests were conducted at leak-detection training facilities in Japan, and results are presented here.
収録刊行物
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- レーザー研究
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レーザー研究 33 (5), 306-310, 2005
一般社団法人 レーザー学会
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詳細情報 詳細情報について
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- CRID
- 1390282679622515200
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- NII論文ID
- 10015725812
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- NII書誌ID
- AN00255326
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- COI
- 1:CAS:528:DC%2BD2MXltlCitrs%3D
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- ISSN
- 13496603
- 03870200
- http://id.crossref.org/issn/03870200
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- NDL書誌ID
- 7364248
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可